Long story short: after all, Metallica is Metallica !
I think this album has the slightest differences than the Hardwired...
most of the song structures sound almost same, for example the opening track 72 seasons is somehow extended version of the opening track of Hardwired, and listen to Screaming Suicide that is strongly similar to Atlas! Rise in all the ways. If you listen to the lower tempo tracks you may think that you are listening to B side of Hardwired...
I think it's the C side of Hardwired... To Self Destruct.
But after all as a long time Metallica fan, i appreciate the fact that my favorite band released a featured studio album that refreshes my best old memories and maybe make some new ones for me.